Question

My application have something like this:

TabActivity
    Tab 1 (ActivityGroup)
        Activity > Activity > MapActivity
    Tab 2 (ActivityGroup)
        MapActivity

The problem is that in the Tab 2 MapActivity the options menu does not appear, even displays an error. But in the first MapActivity works perfectly. I put a breakpoint inside the method onCreateOptionsMenu but even entered it.

I used this tutorial for make my application based in TabHost.

Could anyone help me to know why in one works and the other not?

Thanks in advance.

UPDATE

About version:

<uses-sdk android:minSdkVersion="10" android:targetSdkVersion="13" />

First MapActivity class:

public boolean onCreateOptionsMenu(Menu menu) {
    menu.add(0, 0, 1, "Nearest");
    menu.add(0, 1, 1, "Directions");
    return true;
}

Second MapActivity class:

public boolean onCreateOptionsMenu(Menu menu) {
    menu.add(0, 0, 1, "Nearest");
    menu.add(0, 1, 1, "Region");
    return true;
}

Answer 1

Basically a TabHost only has one options menu.

I haven’t tested it, but my guess would be that it’s just using the first activity that returns true from onCreateOptionsMenu. If you want a different options menu for each tab, you’ll have to do several things:

1) Subclass TabHost and override onCreateOptionsMenu and onPrepareOptionsMenu.

2) When the tab changes (can’t remember how you listen for this event, google it), call invalidateOptionsMenu, which will force a call to onPrepareOptionsMenu.

3) In onPrepareOptionsMenu, remember to call menu.clear(), and then do the normal menu inflation stuff that you do in onCreateOptionsMenu to create your tab specific options menu.